The downloadable local game can run without internet when its files are present. A previously loaded web app may have cached resources, but must be tested on that device. Cloud login/sync, friends, co-op rooms and rankings need their network services. Guest progress is still memory-only, and a cached cloud save waits locally for reconnection.

Choose a save mode deliberately

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ModeWhere progress survivesResult / next action
GuestMemory only; closes with the game document.Use an account before expecting persistent collection.
Local accountThis game origin, browser and profile; not another device.Keep original-site storage; return to the same profile.
Cloud accountAuthenticated cloud identity plus a local cache.Use the same sign-in method and wait for Saved in the cloud.

Choose the right offline expectation

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What you seeWhat to doSuccess / next step
First visit without internetGo online to load the original page/assets, or use the complete local game files. The guide’s cached page does not supply the game.The actual game reaches the menu and renders a run, not only the guide page.
Cloud indicator says OfflineKeep this browser’s local data and reconnect on this same account before using another device.The indicator returns to saved; compare the collection and upgrades after the merge.
Friends or rankings do not load offlineReconnect and use a cloud account. A local account or guest cannot acquire online services just by waiting.Friend/room views load online; continuing a solo local run is a separate choice.

Reconnecting does not add two coin balances

Cloud merging unions collections and recorded completions, keeps maximum upgrade/stat progress, and takes coins and partner from the newer save. Example: two saves with 100 and 250 coins do not become 350; the newer selected save supplies the balance. Avoid parallel purchases while one device has a pending upload.

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